As defined by the US National Cholesterol Education Program Adult Treatment Panel III guidelines, an HDL cholesterol level (HDL-C) of 60 mg/dL or greater is a negative (protective) risk factor.On the other hand, a high-risk HDL cholesterol level is described as one that is below 40 mg/dL.
Spica or Alpha Virginis (Alp Vir) is the brightest naked eye star in the constellation Virgo. With an apparent magnitude of 0.98v, Spica is the 15th brightest star in the entire sky (see: 50 Brightest Stars).Its absolute magnitude is -3.55 and its distance is 262 light years.The Equinox J2000 equatorial coordinates are RA = 13h 25m 11.6s, Dec = -11Â° 09' 41.pica has a spectral type of B1V, a surface temperature of 22,400Â° Kelvin and a luminosity 12,100 times the Sun. It has a mass of 10.3 solar masses and a diameter 7.4 times the Sun. The image above shows the uncropped view of Spica (North is up) through the Takahashi E-180 Astrograph.
by admin. The Pleiades, also known as the Seven Sisters or Messier 45, is an open star cluster located in Taurus constellation. The brightest stars in the cluster represent the Pleiades, the Seven Sisters in Greek mythology, and their parents, the nymph Pleione and the Titan Atlas.Messier 45 is mostly composed of hot, blue, highly luminous stars belonging to the spectral class B with an estimated age under 100 million years.he star is about 370 light years distant from Earth. It is the brightest of the Seven Sisters and the third brightest star in Taurus constellation, after Aldebaran, Alpha Tauri, and Elnath, Beta Tauri.